<wicket:panel xmlns:wicket="http://wicket.apache.org">
    <form wicket:id="languageForm" action="">
        <input wicket:id="russianButton" type="image" src="../images/ru.png"
               name="image" width="25" height="25" style="border-style: none;"/>
        <input wicket:id="englishButton" type="image" src="../images/gb.png"
               name="image" width="25" height="25" style="border-style: none;"/>
    </form>
</wicket:panel>